JPS6342586B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a compact unitized printer used in office machines, particularly ECR POS and the like. In general, a small printer has the minimum necessary configuration for its functionality, including a mechanism for feeding the printing paper to be printed, a mechanism for generating characters on the printing paper (generally a dot bed with a dot configuration or a type wheel,
(type drum and hammer mechanism, etc.), the mechanism that drives them, the ribbon mechanism for impact printers, the motor mechanism that is the energy source for driving them, and the frame mechanism that holds and supports each of the above mechanisms. Based on the minimum configuration, ECR is becoming popular with two-sheet printers that issue journal paper and receipt paper, and slip printers that are generally used to issue slip paper such as slips and forms. . However, the above-mentioned minimum necessary mechanisms are not essentially different for each printer, and in addition to that, two-sheet printers have a journal paper winding mechanism, a receipt paper stamp mechanism, and a cutter mechanism for slip paper. A stopper mechanism that serves as a reference for the printing position, a release mechanism that releases the holding of the slip paper when printing is completed, etc. are attached and added as necessary as accessory mechanisms.

The purpose of the present invention is to provide a unit with the minimum necessary mechanism in advance so that it can handle various combinations of not only 2-sheet printers and slip printers but also printing paper issuing functions in the ECR POS market where various developments are expected in terms of usage. The purpose of the present invention is to provide an inexpensive small-sized printer that can be mass-produced with a structured structure.

Conventionally, in this type of printer, it has been difficult to standardize the basic mechanism even for 2-sheet printers and slip printers, and at best the standardization of functional parts has been limited, and since they are manufactured individually, they are more expensive. It had become a thing. However, the small printer according to the present invention is configured as a unit in its minimum necessary configuration and is configured to be able to respond to various developments. Therefore, it is possible to provide a cheaper printer. The operation and mechanism of the present invention will be explained below based on embodiments of the present invention.

FIG. 1 is a perspective view of a compact unitized printer according to the present invention. The dot head 9 is fixed on a head holder 13 and sweeps along with the dot head in the direction of arrow B, and moves along guide shafts 10 and 11 fixed to the frame 1. Further, a motor 2 serving as an energy source is fixed to a frame 1, and a motor gear 3 is fixed on the shaft thereof. Furthermore, the connecting gears 4, 5, and 6 are connected on the frame 1 by a general method (rotating on a shaft supported by the frame 1), and the rotational force of the motor is ultimately The rotation of the head gear 7 is transmitted to the head gear 7, and the swing lever 8 is configured to engage with a grooved cam inside the head gear 7. It has a structure that converts it into arrow A). In this embodiment, a cartridge ribbon 12 is attached to the frame 1 as the ribbon mechanism, but a general spool ribbon may also be used.

FIG. 2 is a view taken along arrow C in FIG. 1 and shows the structure of the paper feeding mechanism. In this embodiment, a paper feed electromagnet 15 is fixed together with a yoke 14 on a frame 1' which forms a pair with the frame 1, and the suction lever 16 is moved in the direction of arrow F with the trigger lever shaft 18 as the center of rotation.
When the paper feed electromagnet 15 is not energized, the paper feed lever 17 is engaged with one end of the suction lever 16 and cannot rotate in the direction of arrow D about the paper feed lever shaft 19 as the center of rotation. However, when electricity is applied, the engaging portion disengages and rotates in the direction of arrow D, and is integrally constructed with the pawl axle 21. The ratchet wheel 20 is rotated by a certain amount in the direction of arrow E, and the feed roller 22, which is integrated with the ratchet axle 21, is rotated. Based on this unitized compact printer, a two-sheet printer as shown in FIG. By making it into a unit so that it can be fed, it can be used as a two-sheet printer. Furthermore, journal paper 2
7 may be provided. In addition, as shown in Fig. 4, a slip shaft roller 31 integrated with a slip pusher roller shaft 32 that feeds the slip paper 30 is arranged at the bottom to form a unit, and when combined with a unitized printer, it functions as a slip printer. It is also possible to have As described above, the small printer according to the present invention is configured as a unit in its minimum necessary configuration and is configured to be able to cope with various developments. The mass production effect makes it possible to provide inexpensive printers. In particular, in the case of independently separated units, one printing unit has all the driving parts of the motor, printing head, and paper feed roller, and
The other paper feeder unit is provided with a driven part that is driven only by the paper feed roller, so each unit can be easily combined, making it a versatile and compact unit that can be freely changed for use by the user. We can provide printers.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a compact unitized printer according to the present invention. FIG. 2 shows the paper feeding mechanism in the direction of arrow C in FIG. 1. FIG. 3 shows a two-sheet printer using the unitized compact printer of the present invention. FIG. 4 shows a slip printer using the unitized compact printer of the present invention.

Claims (1)

[Claims] 1. A motor fixed to a frame, a connecting means for transmitting the rotational force of the motor, a rotating member that rotates via the connecting means, and a left and right rocking movement that engages with a part of the rotating member. A swinging member that converts into a single unit, a print head that engages with the swinging member and moves along a guide shaft fixed on the frame, and a paper feed member that is fixed to the frame and rotates a paper feed roller. A printing device, and a unitized paper feeding device including a paper pushing roller that is frictionally coupled with the paper feeding roller to feed the recording paper, and the printing device and the paper feeding device are each independent and separate. The unit is constructed as a unit, and the paper feeding device includes a unitized two-sheet paper feeding device including a paper pushing roller for feeding receipt paper and journal paper, and a slip paper pushing roller for feeding slip paper. A standardized slip paper feeding device is selectively used,
A small unit printer characterized in that the paper feed roller of the printing device is arranged so as to feed the paper in cooperation with the paper pusher roller of each of the paper feed units.